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1/*
2 * omap_hwmod macros, structures
3 *
4 * Copyright (C) 2009-2011 Nokia Corporation
5 * Copyright (C) 2011-2012 Texas Instruments, Inc.
6 * Paul Walmsley
7 *
8 * Created in collaboration with (alphabetical order): Benoît Cousson,
9 * Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram Pandita, Sakari
10 * Poussa, Anand Sawant, Santosh Shilimkar, Richard Woodruff
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 * These headers and macros are used to define OMAP on-chip module
17 * data and their integration with other OMAP modules and Linux.
18 * Copious documentation and references can also be found in the
19 * omap_hwmod code, in arch/arm/mach-omap2/omap_hwmod.c (as of this
20 * writing).
21 *
22 * To do:
23 * - add interconnect error log structures
24 * - add pinmuxing
25 * - init_conn_id_bit (CONNID_BIT_VECTOR)
26 * - implement default hwmod SMS/SDRC flags?
27 * - move Linux-specific data ("non-ROM data") out
28 *
29 */
30#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
31#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
32
33#include <linux/kernel.h>
34#include <linux/init.h>
35#include <linux/list.h>
36#include <linux/ioport.h>
37#include <linux/spinlock.h>
38
39struct omap_device;
40
41extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type1;
42extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2;
43extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type3;
44
45/*
46 * OCP SYSCONFIG bit shifts/masks TYPE1. These are for IPs compliant
47 * with the original PRCM protocol defined for OMAP2420
48 */
49#define SYSC_TYPE1_MIDLEMODE_SHIFT 12
50#define SYSC_TYPE1_MIDLEMODE_MASK (0x3 << SYSC_TYPE1_MIDLEMODE_SHIFT)
51#define SYSC_TYPE1_CLOCKACTIVITY_SHIFT 8
52#define SYSC_TYPE1_CLOCKACTIVITY_MASK (0x3 << SYSC_TYPE1_CLOCKACTIVITY_SHIFT)
53#define SYSC_TYPE1_SIDLEMODE_SHIFT 3
54#define SYSC_TYPE1_SIDLEMODE_MASK (0x3 << SYSC_TYPE1_SIDLEMODE_SHIFT)
55#define SYSC_TYPE1_ENAWAKEUP_SHIFT 2
56#define SYSC_TYPE1_ENAWAKEUP_MASK (1 << SYSC_TYPE1_ENAWAKEUP_SHIFT)
57#define SYSC_TYPE1_SOFTRESET_SHIFT 1
58#define SYSC_TYPE1_SOFTRESET_MASK (1 << SYSC_TYPE1_SOFTRESET_SHIFT)
59#define SYSC_TYPE1_AUTOIDLE_SHIFT 0
60#define SYSC_TYPE1_AUTOIDLE_MASK (1 << SYSC_TYPE1_AUTOIDLE_SHIFT)
61
62/*
63 * OCP SYSCONFIG bit shifts/masks TYPE2. These are for IPs compliant
64 * with the new PRCM protocol defined for new OMAP4 IPs.
65 */
66#define SYSC_TYPE2_SOFTRESET_SHIFT 0
67#define SYSC_TYPE2_SOFTRESET_MASK (1 << SYSC_TYPE2_SOFTRESET_SHIFT)
68#define SYSC_TYPE2_SIDLEMODE_SHIFT 2
69#define SYSC_TYPE2_SIDLEMODE_MASK (0x3 << SYSC_TYPE2_SIDLEMODE_SHIFT)
70#define SYSC_TYPE2_MIDLEMODE_SHIFT 4
71#define SYSC_TYPE2_MIDLEMODE_MASK (0x3 << SYSC_TYPE2_MIDLEMODE_SHIFT)
72#define SYSC_TYPE2_DMADISABLE_SHIFT 16
73#define SYSC_TYPE2_DMADISABLE_MASK (0x1 << SYSC_TYPE2_DMADISABLE_SHIFT)
74
75/*
76 * OCP SYSCONFIG bit shifts/masks TYPE3.
77 * This is applicable for some IPs present in AM33XX
78 */
79#define SYSC_TYPE3_SIDLEMODE_SHIFT 0
80#define SYSC_TYPE3_SIDLEMODE_MASK (0x3 << SYSC_TYPE3_SIDLEMODE_SHIFT)
81#define SYSC_TYPE3_MIDLEMODE_SHIFT 2
82#define SYSC_TYPE3_MIDLEMODE_MASK (0x3 << SYSC_TYPE3_MIDLEMODE_SHIFT)
83
84/* OCP SYSSTATUS bit shifts/masks */
85#define SYSS_RESETDONE_SHIFT 0
86#define SYSS_RESETDONE_MASK (1 << SYSS_RESETDONE_SHIFT)
87
88/* Master standby/slave idle mode flags */
89#define HWMOD_IDLEMODE_FORCE (1 << 0)
90#define HWMOD_IDLEMODE_NO (1 << 1)
91#define HWMOD_IDLEMODE_SMART (1 << 2)
92#define HWMOD_IDLEMODE_SMART_WKUP (1 << 3)
93
94/* modulemode control type (SW or HW) */
95#define MODULEMODE_HWCTRL 1
96#define MODULEMODE_SWCTRL 2
97
98#define DEBUG_OMAP2UART1_FLAGS 0
99#define DEBUG_OMAP2UART2_FLAGS 0
100#define DEBUG_OMAP2UART3_FLAGS 0
101#define DEBUG_OMAP3UART3_FLAGS 0
102#define DEBUG_OMAP3UART4_FLAGS 0
103#define DEBUG_OMAP4UART3_FLAGS 0
104#define DEBUG_OMAP4UART4_FLAGS 0
105#define DEBUG_TI81XXUART1_FLAGS 0
106#define DEBUG_TI81XXUART2_FLAGS 0
107#define DEBUG_TI81XXUART3_FLAGS 0
108#define DEBUG_AM33XXUART1_FLAGS 0
109
110#define DEBUG_OMAPUART_FLAGS (HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET)
111
112#if defined(CONFIG_DEBUG_OMAP2UART1)
113#undef DEBUG_OMAP2UART1_FLAGS
114#define DEBUG_OMAP2UART1_FLAGS DEBUG_OMAPUART_FLAGS
115#elif defined(CONFIG_DEBUG_OMAP2UART2)
116#undef DEBUG_OMAP2UART2_FLAGS
117#define DEBUG_OMAP2UART2_FLAGS DEBUG_OMAPUART_FLAGS
118#elif defined(CONFIG_DEBUG_OMAP2UART3)
119#undef DEBUG_OMAP2UART3_FLAGS
120#define DEBUG_OMAP2UART3_FLAGS DEBUG_OMAPUART_FLAGS
121#elif defined(CONFIG_DEBUG_OMAP3UART3)
122#undef DEBUG_OMAP3UART3_FLAGS
123#define DEBUG_OMAP3UART3_FLAGS DEBUG_OMAPUART_FLAGS
124#elif defined(CONFIG_DEBUG_OMAP3UART4)
125#undef DEBUG_OMAP3UART4_FLAGS
126#define DEBUG_OMAP3UART4_FLAGS DEBUG_OMAPUART_FLAGS
127#elif defined(CONFIG_DEBUG_OMAP4UART3)
128#undef DEBUG_OMAP4UART3_FLAGS
129#define DEBUG_OMAP4UART3_FLAGS DEBUG_OMAPUART_FLAGS
130#elif defined(CONFIG_DEBUG_OMAP4UART4)
131#undef DEBUG_OMAP4UART4_FLAGS
132#define DEBUG_OMAP4UART4_FLAGS DEBUG_OMAPUART_FLAGS
133#elif defined(CONFIG_DEBUG_TI81XXUART1)
134#undef DEBUG_TI81XXUART1_FLAGS
135#define DEBUG_TI81XXUART1_FLAGS DEBUG_OMAPUART_FLAGS
136#elif defined(CONFIG_DEBUG_TI81XXUART2)
137#undef DEBUG_TI81XXUART2_FLAGS
138#define DEBUG_TI81XXUART2_FLAGS DEBUG_OMAPUART_FLAGS
139#elif defined(CONFIG_DEBUG_TI81XXUART3)
140#undef DEBUG_TI81XXUART3_FLAGS
141#define DEBUG_TI81XXUART3_FLAGS DEBUG_OMAPUART_FLAGS
142#elif defined(CONFIG_DEBUG_AM33XXUART1)
143#undef DEBUG_AM33XXUART1_FLAGS
144#define DEBUG_AM33XXUART1_FLAGS DEBUG_OMAPUART_FLAGS
145#endif
146
147/**
148 * struct omap_hwmod_mux_info - hwmod specific mux configuration
149 * @pads: array of omap_device_pad entries
150 * @nr_pads: number of omap_device_pad entries
151 *
152 * Note that this is currently built during init as needed.
153 */
154struct omap_hwmod_mux_info {
155 int nr_pads;
156 struct omap_device_pad *pads;
157 int nr_pads_dynamic;
158 struct omap_device_pad **pads_dynamic;
159 int *irqs;
160 bool enabled;
161};
162
163/**
164 * struct omap_hwmod_irq_info - MPU IRQs used by the hwmod
165 * @name: name of the IRQ channel (module local name)
166 * @irq: IRQ channel ID (should be non-negative except -1 = terminator)
167 *
168 * @name should be something short, e.g., "tx" or "rx". It is for use
169 * by platform_get_resource_byname(). It is defined locally to the
170 * hwmod.
171 */
172struct omap_hwmod_irq_info {
173 const char *name;
174 s16 irq;
175};
176
177/**
178 * struct omap_hwmod_dma_info - DMA channels used by the hwmod
179 * @name: name of the DMA channel (module local name)
180 * @dma_req: DMA request ID (should be non-negative except -1 = terminator)
181 *
182 * @name should be something short, e.g., "tx" or "rx". It is for use
183 * by platform_get_resource_byname(). It is defined locally to the
184 * hwmod.
185 */
186struct omap_hwmod_dma_info {
187 const char *name;
188 s16 dma_req;
189};
190
191/**
192 * struct omap_hwmod_rst_info - IPs reset lines use by hwmod
193 * @name: name of the reset line (module local name)
194 * @rst_shift: Offset of the reset bit
195 * @st_shift: Offset of the reset status bit (OMAP2/3 only)
196 *
197 * @name should be something short, e.g., "cpu0" or "rst". It is defined
198 * locally to the hwmod.
199 */
200struct omap_hwmod_rst_info {
201 const char *name;
202 u8 rst_shift;
203 u8 st_shift;
204};
205
206/**
207 * struct omap_hwmod_opt_clk - optional clocks used by this hwmod
208 * @role: "sys", "32k", "tv", etc -- for use in clk_get()
209 * @clk: opt clock: OMAP clock name
210 * @_clk: pointer to the struct clk (filled in at runtime)
211 *
212 * The module's interface clock and main functional clock should not
213 * be added as optional clocks.
214 */
215struct omap_hwmod_opt_clk {
216 const char *role;
217 const char *clk;
218 struct clk *_clk;
219};
220
221
222/* omap_hwmod_omap2_firewall.flags bits */
223#define OMAP_FIREWALL_L3 (1 << 0)
224#define OMAP_FIREWALL_L4 (1 << 1)
225
226/**
227 * struct omap_hwmod_omap2_firewall - OMAP2/3 device firewall data
228 * @l3_perm_bit: bit shift for L3_PM_*_PERMISSION_*
229 * @l4_fw_region: L4 firewall region ID
230 * @l4_prot_group: L4 protection group ID
231 * @flags: (see omap_hwmod_omap2_firewall.flags macros above)
232 */
233struct omap_hwmod_omap2_firewall {
234 u8 l3_perm_bit;
235 u8 l4_fw_region;
236 u8 l4_prot_group;
237 u8 flags;
238};
239
240
241/*
242 * omap_hwmod_addr_space.flags bits
243 *
244 * ADDR_MAP_ON_INIT: Map this address space during omap_hwmod init.
245 * ADDR_TYPE_RT: Address space contains module register target data.
246 */
247#define ADDR_MAP_ON_INIT (1 << 0) /* XXX does not belong */
248#define ADDR_TYPE_RT (1 << 1)
249
250/**
251 * struct omap_hwmod_addr_space - address space handled by the hwmod
252 * @name: name of the address space
253 * @pa_start: starting physical address
254 * @pa_end: ending physical address
255 * @flags: (see omap_hwmod_addr_space.flags macros above)
256 *
257 * Address space doesn't necessarily follow physical interconnect
258 * structure. GPMC is one example.
259 */
260struct omap_hwmod_addr_space {
261 const char *name;
262 u32 pa_start;
263 u32 pa_end;
264 u8 flags;
265};
266
267
268/*
269 * omap_hwmod_ocp_if.user bits: these indicate the initiators that use this
270 * interface to interact with the hwmod. Used to add sleep dependencies
271 * when the module is enabled or disabled.
272 */
273#define OCP_USER_MPU (1 << 0)
274#define OCP_USER_SDMA (1 << 1)
275#define OCP_USER_DSP (1 << 2)
276#define OCP_USER_IVA (1 << 3)
277
278/* omap_hwmod_ocp_if.flags bits */
279#define OCPIF_SWSUP_IDLE (1 << 0)
280#define OCPIF_CAN_BURST (1 << 1)
281
282/* omap_hwmod_ocp_if._int_flags possibilities */
283#define _OCPIF_INT_FLAGS_REGISTERED (1 << 0)
284
285
286/**
287 * struct omap_hwmod_ocp_if - OCP interface data
288 * @master: struct omap_hwmod that initiates OCP transactions on this link
289 * @slave: struct omap_hwmod that responds to OCP transactions on this link
290 * @addr: address space associated with this link
291 * @clk: interface clock: OMAP clock name
292 * @_clk: pointer to the interface struct clk (filled in at runtime)
293 * @fw: interface firewall data
294 * @width: OCP data width
295 * @user: initiators using this interface (see OCP_USER_* macros above)
296 * @flags: OCP interface flags (see OCPIF_* macros above)
297 * @_int_flags: internal flags (see _OCPIF_INT_FLAGS* macros above)
298 *
299 * It may also be useful to add a tag_cnt field for OCP2.x devices.
300 *
301 * Parameter names beginning with an underscore are managed internally by
302 * the omap_hwmod code and should not be set during initialization.
303 */
304struct omap_hwmod_ocp_if {
305 struct omap_hwmod *master;
306 struct omap_hwmod *slave;
307 struct omap_hwmod_addr_space *addr;
308 const char *clk;
309 struct clk *_clk;
310 union {
311 struct omap_hwmod_omap2_firewall omap2;
312 } fw;
313 u8 width;
314 u8 user;
315 u8 flags;
316 u8 _int_flags;
317};
318
319
320/* Macros for use in struct omap_hwmod_sysconfig */
321
322/* Flags for use in omap_hwmod_sysconfig.idlemodes */
323#define MASTER_STANDBY_SHIFT 4
324#define SLAVE_IDLE_SHIFT 0
325#define SIDLE_FORCE (HWMOD_IDLEMODE_FORCE << SLAVE_IDLE_SHIFT)
326#define SIDLE_NO (HWMOD_IDLEMODE_NO << SLAVE_IDLE_SHIFT)
327#define SIDLE_SMART (HWMOD_IDLEMODE_SMART << SLAVE_IDLE_SHIFT)
328#define SIDLE_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << SLAVE_IDLE_SHIFT)
329#define MSTANDBY_FORCE (HWMOD_IDLEMODE_FORCE << MASTER_STANDBY_SHIFT)
330#define MSTANDBY_NO (HWMOD_IDLEMODE_NO << MASTER_STANDBY_SHIFT)
331#define MSTANDBY_SMART (HWMOD_IDLEMODE_SMART << MASTER_STANDBY_SHIFT)
332#define MSTANDBY_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << MASTER_STANDBY_SHIFT)
333
334/* omap_hwmod_sysconfig.sysc_flags capability flags */
335#define SYSC_HAS_AUTOIDLE (1 << 0)
336#define SYSC_HAS_SOFTRESET (1 << 1)
337#define SYSC_HAS_ENAWAKEUP (1 << 2)
338#define SYSC_HAS_EMUFREE (1 << 3)
339#define SYSC_HAS_CLOCKACTIVITY (1 << 4)
340#define SYSC_HAS_SIDLEMODE (1 << 5)
341#define SYSC_HAS_MIDLEMODE (1 << 6)
342#define SYSS_HAS_RESET_STATUS (1 << 7)
343#define SYSC_NO_CACHE (1 << 8) /* XXX SW flag, belongs elsewhere */
344#define SYSC_HAS_RESET_STATUS (1 << 9)
345#define SYSC_HAS_DMADISABLE (1 << 10)
346
347/* omap_hwmod_sysconfig.clockact flags */
348#define CLOCKACT_TEST_BOTH 0x0
349#define CLOCKACT_TEST_MAIN 0x1
350#define CLOCKACT_TEST_ICLK 0x2
351#define CLOCKACT_TEST_NONE 0x3
352
353/**
354 * struct omap_hwmod_sysc_fields - hwmod OCP_SYSCONFIG register field offsets.
355 * @midle_shift: Offset of the midle bit
356 * @clkact_shift: Offset of the clockactivity bit
357 * @sidle_shift: Offset of the sidle bit
358 * @enwkup_shift: Offset of the enawakeup bit
359 * @srst_shift: Offset of the softreset bit
360 * @autoidle_shift: Offset of the autoidle bit
361 * @dmadisable_shift: Offset of the dmadisable bit
362 */
363struct omap_hwmod_sysc_fields {
364 u8 midle_shift;
365 u8 clkact_shift;
366 u8 sidle_shift;
367 u8 enwkup_shift;
368 u8 srst_shift;
369 u8 autoidle_shift;
370 u8 dmadisable_shift;
371};
372
373/**
374 * struct omap_hwmod_class_sysconfig - hwmod class OCP_SYS* data
375 * @rev_offs: IP block revision register offset (from module base addr)
376 * @sysc_offs: OCP_SYSCONFIG register offset (from module base addr)
377 * @syss_offs: OCP_SYSSTATUS register offset (from module base addr)
378 * @srst_udelay: Delay needed after doing a softreset in usecs
379 * @idlemodes: One or more of {SIDLE,MSTANDBY}_{OFF,FORCE,SMART}
380 * @sysc_flags: SYS{C,S}_HAS* flags indicating SYSCONFIG bits supported
381 * @clockact: the default value of the module CLOCKACTIVITY bits
382 *
383 * @clockact describes to the module which clocks are likely to be
384 * disabled when the PRCM issues its idle request to the module. Some
385 * modules have separate clockdomains for the interface clock and main
386 * functional clock, and can check whether they should acknowledge the
387 * idle request based on the internal module functionality that has
388 * been associated with the clocks marked in @clockact. This field is
389 * only used if HWMOD_SET_DEFAULT_CLOCKACT is set (see below)
390 *
391 * @sysc_fields: structure containing the offset positions of various bits in
392 * SYSCONFIG register. This can be populated using omap_hwmod_sysc_type1 or
393 * omap_hwmod_sysc_type2 defined in omap_hwmod_common_data.c depending on
394 * whether the device ip is compliant with the original PRCM protocol
395 * defined for OMAP2420 or the new PRCM protocol for new OMAP4 IPs.
396 * If the device follows a different scheme for the sysconfig register ,
397 * then this field has to be populated with the correct offset structure.
398 */
399struct omap_hwmod_class_sysconfig {
400 u32 rev_offs;
401 u32 sysc_offs;
402 u32 syss_offs;
403 u16 sysc_flags;
404 struct omap_hwmod_sysc_fields *sysc_fields;
405 u8 srst_udelay;
406 u8 idlemodes;
407 u8 clockact;
408};
409
410/**
411 * struct omap_hwmod_omap2_prcm - OMAP2/3-specific PRCM data
412 * @module_offs: PRCM submodule offset from the start of the PRM/CM
413 * @prcm_reg_id: PRCM register ID (e.g., 3 for CM_AUTOIDLE3)
414 * @module_bit: register bit shift for AUTOIDLE, WKST, WKEN, GRPSEL regs
415 * @idlest_reg_id: IDLEST register ID (e.g., 3 for CM_IDLEST3)
416 * @idlest_idle_bit: register bit shift for CM_IDLEST slave idle bit
417 * @idlest_stdby_bit: register bit shift for CM_IDLEST master standby bit
418 *
419 * @prcm_reg_id and @module_bit are specific to the AUTOIDLE, WKST,
420 * WKEN, GRPSEL registers. In an ideal world, no extra information
421 * would be needed for IDLEST information, but alas, there are some
422 * exceptions, so @idlest_reg_id, @idlest_idle_bit, @idlest_stdby_bit
423 * are needed for the IDLEST registers (c.f. 2430 I2CHS, 3430 USBHOST)
424 */
425struct omap_hwmod_omap2_prcm {
426 s16 module_offs;
427 u8 prcm_reg_id;
428 u8 module_bit;
429 u8 idlest_reg_id;
430 u8 idlest_idle_bit;
431 u8 idlest_stdby_bit;
432};
433
434/*
435 * Possible values for struct omap_hwmod_omap4_prcm.flags
436 *
437 * HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT: Some IP blocks don't have a PRCM
438 * module-level context loss register associated with them; this
439 * flag bit should be set in those cases
440 */
441#define HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT (1 << 0)
442
443/**
444 * struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data
445 * @clkctrl_offs: offset of the PRCM clock control register
446 * @rstctrl_offs: offset of the XXX_RSTCTRL register located in the PRM
447 * @context_offs: offset of the RM_*_CONTEXT register
448 * @lostcontext_mask: bitmask for selecting bits from RM_*_CONTEXT register
449 * @rstst_reg: (AM33XX only) address of the XXX_RSTST register in the PRM
450 * @submodule_wkdep_bit: bit shift of the WKDEP range
451 * @flags: PRCM register capabilities for this IP block
452 * @modulemode: allowable modulemodes
453 * @context_lost_counter: Count of module level context lost
454 *
455 * If @lostcontext_mask is not defined, context loss check code uses
456 * whole register without masking. @lostcontext_mask should only be
457 * defined in cases where @context_offs register is shared by two or
458 * more hwmods.
459 */
460struct omap_hwmod_omap4_prcm {
461 u16 clkctrl_offs;
462 u16 rstctrl_offs;
463 u16 rstst_offs;
464 u16 context_offs;
465 u32 lostcontext_mask;
466 u8 submodule_wkdep_bit;
467 u8 modulemode;
468 u8 flags;
469 int context_lost_counter;
470};
471
472
473/*
474 * omap_hwmod.flags definitions
475 *
476 * HWMOD_SWSUP_SIDLE: omap_hwmod code should manually bring module in and out
477 * of idle, rather than relying on module smart-idle
478 * HWMOD_SWSUP_MSTANDBY: omap_hwmod code should manually bring module in and
479 * out of standby, rather than relying on module smart-standby
480 * HWMOD_INIT_NO_RESET: don't reset this module at boot - important for
481 * SDRAM controller, etc. XXX probably belongs outside the main hwmod file
482 * XXX Should be HWMOD_SETUP_NO_RESET
483 * HWMOD_INIT_NO_IDLE: don't idle this module at boot - important for SDRAM
484 * controller, etc. XXX probably belongs outside the main hwmod file
485 * XXX Should be HWMOD_SETUP_NO_IDLE
486 * HWMOD_NO_OCP_AUTOIDLE: disable module autoidle (OCP_SYSCONFIG.AUTOIDLE)
487 * when module is enabled, rather than the default, which is to
488 * enable autoidle
489 * HWMOD_SET_DEFAULT_CLOCKACT: program CLOCKACTIVITY bits at startup
490 * HWMOD_NO_IDLEST: this module does not have idle status - this is the case
491 * only for few initiator modules on OMAP2 & 3.
492 * HWMOD_CONTROL_OPT_CLKS_IN_RESET: Enable all optional clocks during reset.
493 * This is needed for devices like DSS that require optional clocks enabled
494 * in order to complete the reset. Optional clocks will be disabled
495 * again after the reset.
496 * HWMOD_16BIT_REG: Module has 16bit registers
497 * HWMOD_EXT_OPT_MAIN_CLK: The only main functional clock source for
498 * this IP block comes from an off-chip source and is not always
499 * enabled. This prevents the hwmod code from being able to
500 * enable and reset the IP block early. XXX Eventually it should
501 * be possible to query the clock framework for this information.
502 * HWMOD_BLOCK_WFI: Some OMAP peripherals apparently don't work
503 * correctly if the MPU is allowed to go idle while the
504 * peripherals are active. This is apparently true for the I2C on
505 * OMAP2420, and also the EMAC on AM3517/3505. It's unlikely that
506 * this is really true -- we're probably not configuring something
507 * correctly, or this is being abused to deal with some PM latency
508 * issues -- but we're currently suffering from a shortage of
509 * folks who are able to track these issues down properly.
510 * HWMOD_FORCE_MSTANDBY: Always keep MIDLEMODE bits cleared so that device
511 * is kept in force-standby mode. Failing to do so causes PM problems
512 * with musb on OMAP3630 at least. Note that musb has a dedicated register
513 * to control MSTANDBY signal when MIDLEMODE is set to force-standby.
514 * HWMOD_SWSUP_SIDLE_ACT: omap_hwmod code should manually bring the module
515 * out of idle, but rely on smart-idle to the put it back in idle,
516 * so the wakeups are still functional (Only known case for now is UART)
517 */
518#define HWMOD_SWSUP_SIDLE (1 << 0)
519#define HWMOD_SWSUP_MSTANDBY (1 << 1)
520#define HWMOD_INIT_NO_RESET (1 << 2)
521#define HWMOD_INIT_NO_IDLE (1 << 3)
522#define HWMOD_NO_OCP_AUTOIDLE (1 << 4)
523#define HWMOD_SET_DEFAULT_CLOCKACT (1 << 5)
524#define HWMOD_NO_IDLEST (1 << 6)
525#define HWMOD_CONTROL_OPT_CLKS_IN_RESET (1 << 7)
526#define HWMOD_16BIT_REG (1 << 8)
527#define HWMOD_EXT_OPT_MAIN_CLK (1 << 9)
528#define HWMOD_BLOCK_WFI (1 << 10)
529#define HWMOD_FORCE_MSTANDBY (1 << 11)
530#define HWMOD_SWSUP_SIDLE_ACT (1 << 12)
531
532/*
533 * omap_hwmod._int_flags definitions
534 * These are for internal use only and are managed by the omap_hwmod code.
535 *
536 * _HWMOD_NO_MPU_PORT: no path exists for the MPU to write to this module
537 * _HWMOD_SYSCONFIG_LOADED: set when the OCP_SYSCONFIG value has been cached
538 * _HWMOD_SKIP_ENABLE: set if hwmod enabled during init (HWMOD_INIT_NO_IDLE) -
539 * causes the first call to _enable() to only update the pinmux
540 */
541#define _HWMOD_NO_MPU_PORT (1 << 0)
542#define _HWMOD_SYSCONFIG_LOADED (1 << 1)
543#define _HWMOD_SKIP_ENABLE (1 << 2)
544
545/*
546 * omap_hwmod._state definitions
547 *
548 * INITIALIZED: reset (optionally), initialized, enabled, disabled
549 * (optionally)
550 *
551 *
552 */
553#define _HWMOD_STATE_UNKNOWN 0
554#define _HWMOD_STATE_REGISTERED 1
555#define _HWMOD_STATE_CLKS_INITED 2
556#define _HWMOD_STATE_INITIALIZED 3
557#define _HWMOD_STATE_ENABLED 4
558#define _HWMOD_STATE_IDLE 5
559#define _HWMOD_STATE_DISABLED 6
560
561/**
562 * struct omap_hwmod_class - the type of an IP block
563 * @name: name of the hwmod_class
564 * @sysc: device SYSCONFIG/SYSSTATUS register data
565 * @rev: revision of the IP class
566 * @pre_shutdown: ptr to fn to be executed immediately prior to device shutdown
567 * @reset: ptr to fn to be executed in place of the standard hwmod reset fn
568 * @enable_preprogram: ptr to fn to be executed during device enable
569 *
570 * Represent the class of a OMAP hardware "modules" (e.g. timer,
571 * smartreflex, gpio, uart...)
572 *
573 * @pre_shutdown is a function that will be run immediately before
574 * hwmod clocks are disabled, etc. It is intended for use for hwmods
575 * like the MPU watchdog, which cannot be disabled with the standard
576 * omap_hwmod_shutdown(). The function should return 0 upon success,
577 * or some negative error upon failure. Returning an error will cause
578 * omap_hwmod_shutdown() to abort the device shutdown and return an
579 * error.
580 *
581 * If @reset is defined, then the function it points to will be
582 * executed in place of the standard hwmod _reset() code in
583 * mach-omap2/omap_hwmod.c. This is needed for IP blocks which have
584 * unusual reset sequences - usually processor IP blocks like the IVA.
585 */
586struct omap_hwmod_class {
587 const char *name;
588 struct omap_hwmod_class_sysconfig *sysc;
589 u32 rev;
590 int (*pre_shutdown)(struct omap_hwmod *oh);
591 int (*reset)(struct omap_hwmod *oh);
592 int (*enable_preprogram)(struct omap_hwmod *oh);
593};
594
595/**
596 * struct omap_hwmod_link - internal structure linking hwmods with ocp_ifs
597 * @ocp_if: OCP interface structure record pointer
598 * @node: list_head pointing to next struct omap_hwmod_link in a list
599 */
600struct omap_hwmod_link {
601 struct omap_hwmod_ocp_if *ocp_if;
602 struct list_head node;
603};
604
605/**
606 * struct omap_hwmod - integration data for OMAP hardware "modules" (IP blocks)
607 * @name: name of the hwmod
608 * @class: struct omap_hwmod_class * to the class of this hwmod
609 * @od: struct omap_device currently associated with this hwmod (internal use)
610 * @mpu_irqs: ptr to an array of MPU IRQs
611 * @sdma_reqs: ptr to an array of System DMA request IDs
612 * @prcm: PRCM data pertaining to this hwmod
613 * @main_clk: main clock: OMAP clock name
614 * @_clk: pointer to the main struct clk (filled in at runtime)
615 * @opt_clks: other device clocks that drivers can request (0..*)
616 * @voltdm: pointer to voltage domain (filled in at runtime)
617 * @dev_attr: arbitrary device attributes that can be passed to the driver
618 * @_sysc_cache: internal-use hwmod flags
619 * @mpu_rt_idx: index of device address space for register target (for DT boot)
620 * @_mpu_rt_va: cached register target start address (internal use)
621 * @_mpu_port: cached MPU register target slave (internal use)
622 * @opt_clks_cnt: number of @opt_clks
623 * @master_cnt: number of @master entries
624 * @slaves_cnt: number of @slave entries
625 * @response_lat: device OCP response latency (in interface clock cycles)
626 * @_int_flags: internal-use hwmod flags
627 * @_state: internal-use hwmod state
628 * @_postsetup_state: internal-use state to leave the hwmod in after _setup()
629 * @flags: hwmod flags (documented below)
630 * @_lock: spinlock serializing operations on this hwmod
631 * @node: list node for hwmod list (internal use)
632 *
633 * @main_clk refers to this module's "main clock," which for our
634 * purposes is defined as "the functional clock needed for register
635 * accesses to complete." Modules may not have a main clock if the
636 * interface clock also serves as a main clock.
637 *
638 * Parameter names beginning with an underscore are managed internally by
639 * the omap_hwmod code and should not be set during initialization.
640 *
641 * @masters and @slaves are now deprecated.
642 */
643struct omap_hwmod {
644 const char *name;
645 struct omap_hwmod_class *class;
646 struct omap_device *od;
647 struct omap_hwmod_mux_info *mux;
648 struct omap_hwmod_irq_info *mpu_irqs;
649 struct omap_hwmod_dma_info *sdma_reqs;
650 struct omap_hwmod_rst_info *rst_lines;
651 union {
652 struct omap_hwmod_omap2_prcm omap2;
653 struct omap_hwmod_omap4_prcm omap4;
654 } prcm;
655 const char *main_clk;
656 struct clk *_clk;
657 struct omap_hwmod_opt_clk *opt_clks;
658 char *clkdm_name;
659 struct clockdomain *clkdm;
660 struct list_head master_ports; /* connect to *_IA */
661 struct list_head slave_ports; /* connect to *_TA */
662 void *dev_attr;
663 u32 _sysc_cache;
664 void __iomem *_mpu_rt_va;
665 spinlock_t _lock;
666 struct list_head node;
667 struct omap_hwmod_ocp_if *_mpu_port;
668 u16 flags;
669 u8 mpu_rt_idx;
670 u8 response_lat;
671 u8 rst_lines_cnt;
672 u8 opt_clks_cnt;
673 u8 masters_cnt;
674 u8 slaves_cnt;
675 u8 hwmods_cnt;
676 u8 _int_flags;
677 u8 _state;
678 u8 _postsetup_state;
679};
680
681struct omap_hwmod *omap_hwmod_lookup(const char *name);
682int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data),
683 void *data);
684
685int __init omap_hwmod_setup_one(const char *name);
686
687int omap_hwmod_enable(struct omap_hwmod *oh);
688int omap_hwmod_idle(struct omap_hwmod *oh);
689int omap_hwmod_shutdown(struct omap_hwmod *oh);
690
691int omap_hwmod_assert_hardreset(struct omap_hwmod *oh, const char *name);
692int omap_hwmod_deassert_hardreset(struct omap_hwmod *oh, const char *name);
693int omap_hwmod_read_hardreset(struct omap_hwmod *oh, const char *name);
694
695int omap_hwmod_enable_clocks(struct omap_hwmod *oh);
696int omap_hwmod_disable_clocks(struct omap_hwmod *oh);
697
698int omap_hwmod_reset(struct omap_hwmod *oh);
699void omap_hwmod_ocp_barrier(struct omap_hwmod *oh);
700
701void omap_hwmod_write(u32 v, struct omap_hwmod *oh, u16 reg_offs);
702u32 omap_hwmod_read(struct omap_hwmod *oh, u16 reg_offs);
703int omap_hwmod_softreset(struct omap_hwmod *oh);
704
705int omap_hwmod_count_resources(struct omap_hwmod *oh, unsigned long flags);
706int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res);
707int omap_hwmod_fill_dma_resources(struct omap_hwmod *oh, struct resource *res);
708int omap_hwmod_get_resource_byname(struct omap_hwmod *oh, unsigned int type,
709 const char *name, struct resource *res);
710
711struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh);
712void __iomem *omap_hwmod_get_mpu_rt_va(struct omap_hwmod *oh);
713
714int omap_hwmod_add_initiator_dep(struct omap_hwmod *oh,
715 struct omap_hwmod *init_oh);
716int omap_hwmod_del_initiator_dep(struct omap_hwmod *oh,
717 struct omap_hwmod *init_oh);
718
719int omap_hwmod_enable_wakeup(struct omap_hwmod *oh);
720int omap_hwmod_disable_wakeup(struct omap_hwmod *oh);
721
722int omap_hwmod_for_each_by_class(const char *classname,
723 int (*fn)(struct omap_hwmod *oh,
724 void *user),
725 void *user);
726
727int omap_hwmod_set_postsetup_state(struct omap_hwmod *oh, u8 state);
728int omap_hwmod_get_context_loss_count(struct omap_hwmod *oh);
729
730int omap_hwmod_no_setup_reset(struct omap_hwmod *oh);
731
732int omap_hwmod_pad_route_irq(struct omap_hwmod *oh, int pad_idx, int irq_idx);
733
734extern void __init omap_hwmod_init(void);
735
736const char *omap_hwmod_get_main_clk(struct omap_hwmod *oh);
737
738/*
739 *
740 */
741
742extern int omap_hwmod_aess_preprogram(struct omap_hwmod *oh);
743
744/*
745 * Chip variant-specific hwmod init routines - XXX should be converted
746 * to use initcalls once the initial boot ordering is straightened out
747 */
748extern int omap2420_hwmod_init(void);
749extern int omap2430_hwmod_init(void);
750extern int omap3xxx_hwmod_init(void);
751extern int omap44xx_hwmod_init(void);
752extern int omap54xx_hwmod_init(void);
753extern int am33xx_hwmod_init(void);
754extern int dra7xx_hwmod_init(void);
755int am43xx_hwmod_init(void);
756
757extern int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois);
758
759#endif
1/*
2 * omap_hwmod macros, structures
3 *
4 * Copyright (C) 2009-2011 Nokia Corporation
5 * Copyright (C) 2011-2012 Texas Instruments, Inc.
6 * Paul Walmsley
7 *
8 * Created in collaboration with (alphabetical order): Benoît Cousson,
9 * Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram Pandita, Sakari
10 * Poussa, Anand Sawant, Santosh Shilimkar, Richard Woodruff
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 * These headers and macros are used to define OMAP on-chip module
17 * data and their integration with other OMAP modules and Linux.
18 * Copious documentation and references can also be found in the
19 * omap_hwmod code, in arch/arm/mach-omap2/omap_hwmod.c (as of this
20 * writing).
21 *
22 * To do:
23 * - add interconnect error log structures
24 * - init_conn_id_bit (CONNID_BIT_VECTOR)
25 * - implement default hwmod SMS/SDRC flags?
26 * - move Linux-specific data ("non-ROM data") out
27 *
28 */
29#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
30#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
31
32#include <linux/kernel.h>
33#include <linux/init.h>
34#include <linux/list.h>
35#include <linux/ioport.h>
36#include <linux/spinlock.h>
37
38struct omap_device;
39
40extern struct sysc_regbits omap_hwmod_sysc_type1;
41extern struct sysc_regbits omap_hwmod_sysc_type2;
42extern struct sysc_regbits omap_hwmod_sysc_type3;
43extern struct sysc_regbits omap34xx_sr_sysc_fields;
44extern struct sysc_regbits omap36xx_sr_sysc_fields;
45extern struct sysc_regbits omap3_sham_sysc_fields;
46extern struct sysc_regbits omap3xxx_aes_sysc_fields;
47extern struct sysc_regbits omap_hwmod_sysc_type_mcasp;
48extern struct sysc_regbits omap_hwmod_sysc_type_usb_host_fs;
49
50/*
51 * OCP SYSCONFIG bit shifts/masks TYPE1. These are for IPs compliant
52 * with the original PRCM protocol defined for OMAP2420
53 */
54#define SYSC_TYPE1_MIDLEMODE_SHIFT 12
55#define SYSC_TYPE1_MIDLEMODE_MASK (0x3 << SYSC_TYPE1_MIDLEMODE_SHIFT)
56#define SYSC_TYPE1_CLOCKACTIVITY_SHIFT 8
57#define SYSC_TYPE1_CLOCKACTIVITY_MASK (0x3 << SYSC_TYPE1_CLOCKACTIVITY_SHIFT)
58#define SYSC_TYPE1_SIDLEMODE_SHIFT 3
59#define SYSC_TYPE1_SIDLEMODE_MASK (0x3 << SYSC_TYPE1_SIDLEMODE_SHIFT)
60#define SYSC_TYPE1_ENAWAKEUP_SHIFT 2
61#define SYSC_TYPE1_ENAWAKEUP_MASK (1 << SYSC_TYPE1_ENAWAKEUP_SHIFT)
62#define SYSC_TYPE1_SOFTRESET_SHIFT 1
63#define SYSC_TYPE1_SOFTRESET_MASK (1 << SYSC_TYPE1_SOFTRESET_SHIFT)
64#define SYSC_TYPE1_AUTOIDLE_SHIFT 0
65#define SYSC_TYPE1_AUTOIDLE_MASK (1 << SYSC_TYPE1_AUTOIDLE_SHIFT)
66
67/*
68 * OCP SYSCONFIG bit shifts/masks TYPE2. These are for IPs compliant
69 * with the new PRCM protocol defined for new OMAP4 IPs.
70 */
71#define SYSC_TYPE2_SOFTRESET_SHIFT 0
72#define SYSC_TYPE2_SOFTRESET_MASK (1 << SYSC_TYPE2_SOFTRESET_SHIFT)
73#define SYSC_TYPE2_SIDLEMODE_SHIFT 2
74#define SYSC_TYPE2_SIDLEMODE_MASK (0x3 << SYSC_TYPE2_SIDLEMODE_SHIFT)
75#define SYSC_TYPE2_MIDLEMODE_SHIFT 4
76#define SYSC_TYPE2_MIDLEMODE_MASK (0x3 << SYSC_TYPE2_MIDLEMODE_SHIFT)
77#define SYSC_TYPE2_DMADISABLE_SHIFT 16
78#define SYSC_TYPE2_DMADISABLE_MASK (0x1 << SYSC_TYPE2_DMADISABLE_SHIFT)
79
80/*
81 * OCP SYSCONFIG bit shifts/masks TYPE3.
82 * This is applicable for some IPs present in AM33XX
83 */
84#define SYSC_TYPE3_SIDLEMODE_SHIFT 0
85#define SYSC_TYPE3_SIDLEMODE_MASK (0x3 << SYSC_TYPE3_SIDLEMODE_SHIFT)
86#define SYSC_TYPE3_MIDLEMODE_SHIFT 2
87#define SYSC_TYPE3_MIDLEMODE_MASK (0x3 << SYSC_TYPE3_MIDLEMODE_SHIFT)
88
89/* OCP SYSSTATUS bit shifts/masks */
90#define SYSS_RESETDONE_SHIFT 0
91#define SYSS_RESETDONE_MASK (1 << SYSS_RESETDONE_SHIFT)
92
93/* Master standby/slave idle mode flags */
94#define HWMOD_IDLEMODE_FORCE (1 << 0)
95#define HWMOD_IDLEMODE_NO (1 << 1)
96#define HWMOD_IDLEMODE_SMART (1 << 2)
97#define HWMOD_IDLEMODE_SMART_WKUP (1 << 3)
98
99/* modulemode control type (SW or HW) */
100#define MODULEMODE_HWCTRL 1
101#define MODULEMODE_SWCTRL 2
102
103#define DEBUG_OMAP2UART1_FLAGS 0
104#define DEBUG_OMAP2UART2_FLAGS 0
105#define DEBUG_OMAP2UART3_FLAGS 0
106#define DEBUG_OMAP3UART3_FLAGS 0
107#define DEBUG_OMAP3UART4_FLAGS 0
108#define DEBUG_OMAP4UART3_FLAGS 0
109#define DEBUG_OMAP4UART4_FLAGS 0
110#define DEBUG_TI81XXUART1_FLAGS 0
111#define DEBUG_TI81XXUART2_FLAGS 0
112#define DEBUG_TI81XXUART3_FLAGS 0
113#define DEBUG_AM33XXUART1_FLAGS 0
114
115#define DEBUG_OMAPUART_FLAGS (HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET)
116
117#ifdef CONFIG_OMAP_GPMC_DEBUG
118#define DEBUG_OMAP_GPMC_HWMOD_FLAGS HWMOD_INIT_NO_RESET
119#else
120#define DEBUG_OMAP_GPMC_HWMOD_FLAGS 0
121#endif
122
123#if defined(CONFIG_DEBUG_OMAP2UART1)
124#undef DEBUG_OMAP2UART1_FLAGS
125#define DEBUG_OMAP2UART1_FLAGS DEBUG_OMAPUART_FLAGS
126#elif defined(CONFIG_DEBUG_OMAP2UART2)
127#undef DEBUG_OMAP2UART2_FLAGS
128#define DEBUG_OMAP2UART2_FLAGS DEBUG_OMAPUART_FLAGS
129#elif defined(CONFIG_DEBUG_OMAP2UART3)
130#undef DEBUG_OMAP2UART3_FLAGS
131#define DEBUG_OMAP2UART3_FLAGS DEBUG_OMAPUART_FLAGS
132#elif defined(CONFIG_DEBUG_OMAP3UART3)
133#undef DEBUG_OMAP3UART3_FLAGS
134#define DEBUG_OMAP3UART3_FLAGS DEBUG_OMAPUART_FLAGS
135#elif defined(CONFIG_DEBUG_OMAP3UART4)
136#undef DEBUG_OMAP3UART4_FLAGS
137#define DEBUG_OMAP3UART4_FLAGS DEBUG_OMAPUART_FLAGS
138#elif defined(CONFIG_DEBUG_OMAP4UART3)
139#undef DEBUG_OMAP4UART3_FLAGS
140#define DEBUG_OMAP4UART3_FLAGS DEBUG_OMAPUART_FLAGS
141#elif defined(CONFIG_DEBUG_OMAP4UART4)
142#undef DEBUG_OMAP4UART4_FLAGS
143#define DEBUG_OMAP4UART4_FLAGS DEBUG_OMAPUART_FLAGS
144#elif defined(CONFIG_DEBUG_TI81XXUART1)
145#undef DEBUG_TI81XXUART1_FLAGS
146#define DEBUG_TI81XXUART1_FLAGS DEBUG_OMAPUART_FLAGS
147#elif defined(CONFIG_DEBUG_TI81XXUART2)
148#undef DEBUG_TI81XXUART2_FLAGS
149#define DEBUG_TI81XXUART2_FLAGS DEBUG_OMAPUART_FLAGS
150#elif defined(CONFIG_DEBUG_TI81XXUART3)
151#undef DEBUG_TI81XXUART3_FLAGS
152#define DEBUG_TI81XXUART3_FLAGS DEBUG_OMAPUART_FLAGS
153#elif defined(CONFIG_DEBUG_AM33XXUART1)
154#undef DEBUG_AM33XXUART1_FLAGS
155#define DEBUG_AM33XXUART1_FLAGS DEBUG_OMAPUART_FLAGS
156#endif
157
158/**
159 * struct omap_hwmod_rst_info - IPs reset lines use by hwmod
160 * @name: name of the reset line (module local name)
161 * @rst_shift: Offset of the reset bit
162 * @st_shift: Offset of the reset status bit (OMAP2/3 only)
163 *
164 * @name should be something short, e.g., "cpu0" or "rst". It is defined
165 * locally to the hwmod.
166 */
167struct omap_hwmod_rst_info {
168 const char *name;
169 u8 rst_shift;
170 u8 st_shift;
171};
172
173/**
174 * struct omap_hwmod_opt_clk - optional clocks used by this hwmod
175 * @role: "sys", "32k", "tv", etc -- for use in clk_get()
176 * @clk: opt clock: OMAP clock name
177 * @_clk: pointer to the struct clk (filled in at runtime)
178 *
179 * The module's interface clock and main functional clock should not
180 * be added as optional clocks.
181 */
182struct omap_hwmod_opt_clk {
183 const char *role;
184 const char *clk;
185 struct clk *_clk;
186};
187
188
189/* omap_hwmod_omap2_firewall.flags bits */
190#define OMAP_FIREWALL_L3 (1 << 0)
191#define OMAP_FIREWALL_L4 (1 << 1)
192
193/**
194 * struct omap_hwmod_omap2_firewall - OMAP2/3 device firewall data
195 * @l3_perm_bit: bit shift for L3_PM_*_PERMISSION_*
196 * @l4_fw_region: L4 firewall region ID
197 * @l4_prot_group: L4 protection group ID
198 * @flags: (see omap_hwmod_omap2_firewall.flags macros above)
199 */
200struct omap_hwmod_omap2_firewall {
201 u8 l3_perm_bit;
202 u8 l4_fw_region;
203 u8 l4_prot_group;
204 u8 flags;
205};
206
207/*
208 * omap_hwmod_ocp_if.user bits: these indicate the initiators that use this
209 * interface to interact with the hwmod. Used to add sleep dependencies
210 * when the module is enabled or disabled.
211 */
212#define OCP_USER_MPU (1 << 0)
213#define OCP_USER_SDMA (1 << 1)
214#define OCP_USER_DSP (1 << 2)
215#define OCP_USER_IVA (1 << 3)
216
217/* omap_hwmod_ocp_if.flags bits */
218#define OCPIF_SWSUP_IDLE (1 << 0)
219#define OCPIF_CAN_BURST (1 << 1)
220
221/* omap_hwmod_ocp_if._int_flags possibilities */
222#define _OCPIF_INT_FLAGS_REGISTERED (1 << 0)
223
224
225/**
226 * struct omap_hwmod_ocp_if - OCP interface data
227 * @master: struct omap_hwmod that initiates OCP transactions on this link
228 * @slave: struct omap_hwmod that responds to OCP transactions on this link
229 * @addr: address space associated with this link
230 * @clk: interface clock: OMAP clock name
231 * @_clk: pointer to the interface struct clk (filled in at runtime)
232 * @fw: interface firewall data
233 * @width: OCP data width
234 * @user: initiators using this interface (see OCP_USER_* macros above)
235 * @flags: OCP interface flags (see OCPIF_* macros above)
236 * @_int_flags: internal flags (see _OCPIF_INT_FLAGS* macros above)
237 *
238 * It may also be useful to add a tag_cnt field for OCP2.x devices.
239 *
240 * Parameter names beginning with an underscore are managed internally by
241 * the omap_hwmod code and should not be set during initialization.
242 */
243struct omap_hwmod_ocp_if {
244 struct omap_hwmod *master;
245 struct omap_hwmod *slave;
246 struct omap_hwmod_addr_space *addr;
247 const char *clk;
248 struct clk *_clk;
249 struct list_head node;
250 union {
251 struct omap_hwmod_omap2_firewall omap2;
252 } fw;
253 u8 width;
254 u8 user;
255 u8 flags;
256 u8 _int_flags;
257};
258
259
260/* Macros for use in struct omap_hwmod_sysconfig */
261
262/* Flags for use in omap_hwmod_sysconfig.idlemodes */
263#define MASTER_STANDBY_SHIFT 4
264#define SLAVE_IDLE_SHIFT 0
265#define SIDLE_FORCE (HWMOD_IDLEMODE_FORCE << SLAVE_IDLE_SHIFT)
266#define SIDLE_NO (HWMOD_IDLEMODE_NO << SLAVE_IDLE_SHIFT)
267#define SIDLE_SMART (HWMOD_IDLEMODE_SMART << SLAVE_IDLE_SHIFT)
268#define SIDLE_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << SLAVE_IDLE_SHIFT)
269#define MSTANDBY_FORCE (HWMOD_IDLEMODE_FORCE << MASTER_STANDBY_SHIFT)
270#define MSTANDBY_NO (HWMOD_IDLEMODE_NO << MASTER_STANDBY_SHIFT)
271#define MSTANDBY_SMART (HWMOD_IDLEMODE_SMART << MASTER_STANDBY_SHIFT)
272#define MSTANDBY_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << MASTER_STANDBY_SHIFT)
273
274/* omap_hwmod_sysconfig.sysc_flags capability flags */
275#define SYSC_HAS_AUTOIDLE (1 << 0)
276#define SYSC_HAS_SOFTRESET (1 << 1)
277#define SYSC_HAS_ENAWAKEUP (1 << 2)
278#define SYSC_HAS_EMUFREE (1 << 3)
279#define SYSC_HAS_CLOCKACTIVITY (1 << 4)
280#define SYSC_HAS_SIDLEMODE (1 << 5)
281#define SYSC_HAS_MIDLEMODE (1 << 6)
282#define SYSS_HAS_RESET_STATUS (1 << 7)
283#define SYSC_NO_CACHE (1 << 8) /* XXX SW flag, belongs elsewhere */
284#define SYSC_HAS_RESET_STATUS (1 << 9)
285#define SYSC_HAS_DMADISABLE (1 << 10)
286
287/* omap_hwmod_sysconfig.clockact flags */
288#define CLOCKACT_TEST_BOTH 0x0
289#define CLOCKACT_TEST_MAIN 0x1
290#define CLOCKACT_TEST_ICLK 0x2
291#define CLOCKACT_TEST_NONE 0x3
292
293/**
294 * struct omap_hwmod_class_sysconfig - hwmod class OCP_SYS* data
295 * @rev_offs: IP block revision register offset (from module base addr)
296 * @sysc_offs: OCP_SYSCONFIG register offset (from module base addr)
297 * @syss_offs: OCP_SYSSTATUS register offset (from module base addr)
298 * @srst_udelay: Delay needed after doing a softreset in usecs
299 * @idlemodes: One or more of {SIDLE,MSTANDBY}_{OFF,FORCE,SMART}
300 * @sysc_flags: SYS{C,S}_HAS* flags indicating SYSCONFIG bits supported
301 * @clockact: the default value of the module CLOCKACTIVITY bits
302 *
303 * @clockact describes to the module which clocks are likely to be
304 * disabled when the PRCM issues its idle request to the module. Some
305 * modules have separate clockdomains for the interface clock and main
306 * functional clock, and can check whether they should acknowledge the
307 * idle request based on the internal module functionality that has
308 * been associated with the clocks marked in @clockact. This field is
309 * only used if HWMOD_SET_DEFAULT_CLOCKACT is set (see below)
310 *
311 * @sysc_fields: structure containing the offset positions of various bits in
312 * SYSCONFIG register. This can be populated using omap_hwmod_sysc_type1 or
313 * omap_hwmod_sysc_type2 defined in omap_hwmod_common_data.c depending on
314 * whether the device ip is compliant with the original PRCM protocol
315 * defined for OMAP2420 or the new PRCM protocol for new OMAP4 IPs.
316 * If the device follows a different scheme for the sysconfig register ,
317 * then this field has to be populated with the correct offset structure.
318 */
319struct omap_hwmod_class_sysconfig {
320 u32 rev_offs;
321 u32 sysc_offs;
322 u32 syss_offs;
323 u16 sysc_flags;
324 struct sysc_regbits *sysc_fields;
325 u8 srst_udelay;
326 u8 idlemodes;
327};
328
329/**
330 * struct omap_hwmod_omap2_prcm - OMAP2/3-specific PRCM data
331 * @module_offs: PRCM submodule offset from the start of the PRM/CM
332 * @idlest_reg_id: IDLEST register ID (e.g., 3 for CM_IDLEST3)
333 * @idlest_idle_bit: register bit shift for CM_IDLEST slave idle bit
334 *
335 * @prcm_reg_id and @module_bit are specific to the AUTOIDLE, WKST,
336 * WKEN, GRPSEL registers. In an ideal world, no extra information
337 * would be needed for IDLEST information, but alas, there are some
338 * exceptions, so @idlest_reg_id, @idlest_idle_bit, @idlest_stdby_bit
339 * are needed for the IDLEST registers (c.f. 2430 I2CHS, 3430 USBHOST)
340 */
341struct omap_hwmod_omap2_prcm {
342 s16 module_offs;
343 u8 idlest_reg_id;
344 u8 idlest_idle_bit;
345};
346
347/*
348 * Possible values for struct omap_hwmod_omap4_prcm.flags
349 *
350 * HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT: Some IP blocks don't have a PRCM
351 * module-level context loss register associated with them; this
352 * flag bit should be set in those cases
353 * HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET: Some IP blocks have a valid CLKCTRL
354 * offset of zero; this flag bit should be set in those cases to
355 * distinguish from hwmods that have no clkctrl offset.
356 * HWMOD_OMAP4_CLKFWK_CLKCTR_CLOCK: Module clockctrl clock is managed
357 * by the common clock framework and not hwmod.
358 */
359#define HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT (1 << 0)
360#define HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET (1 << 1)
361#define HWMOD_OMAP4_CLKFWK_CLKCTR_CLOCK (1 << 2)
362
363/**
364 * struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data
365 * @clkctrl_offs: offset of the PRCM clock control register
366 * @rstctrl_offs: offset of the XXX_RSTCTRL register located in the PRM
367 * @context_offs: offset of the RM_*_CONTEXT register
368 * @lostcontext_mask: bitmask for selecting bits from RM_*_CONTEXT register
369 * @rstst_reg: (AM33XX only) address of the XXX_RSTST register in the PRM
370 * @submodule_wkdep_bit: bit shift of the WKDEP range
371 * @flags: PRCM register capabilities for this IP block
372 * @modulemode: allowable modulemodes
373 * @context_lost_counter: Count of module level context lost
374 *
375 * If @lostcontext_mask is not defined, context loss check code uses
376 * whole register without masking. @lostcontext_mask should only be
377 * defined in cases where @context_offs register is shared by two or
378 * more hwmods.
379 */
380struct omap_hwmod_omap4_prcm {
381 u16 clkctrl_offs;
382 u16 rstctrl_offs;
383 u16 rstst_offs;
384 u16 context_offs;
385 u32 lostcontext_mask;
386 u8 submodule_wkdep_bit;
387 u8 modulemode;
388 u8 flags;
389 int context_lost_counter;
390};
391
392
393/*
394 * omap_hwmod.flags definitions
395 *
396 * HWMOD_SWSUP_SIDLE: omap_hwmod code should manually bring module in and out
397 * of idle, rather than relying on module smart-idle
398 * HWMOD_SWSUP_MSTANDBY: omap_hwmod code should manually bring module in and
399 * out of standby, rather than relying on module smart-standby
400 * HWMOD_INIT_NO_RESET: don't reset this module at boot - important for
401 * SDRAM controller, etc. XXX probably belongs outside the main hwmod file
402 * XXX Should be HWMOD_SETUP_NO_RESET
403 * HWMOD_INIT_NO_IDLE: don't idle this module at boot - important for SDRAM
404 * controller, etc. XXX probably belongs outside the main hwmod file
405 * XXX Should be HWMOD_SETUP_NO_IDLE
406 * HWMOD_NO_OCP_AUTOIDLE: disable module autoidle (OCP_SYSCONFIG.AUTOIDLE)
407 * when module is enabled, rather than the default, which is to
408 * enable autoidle
409 * HWMOD_SET_DEFAULT_CLOCKACT: program CLOCKACTIVITY bits at startup
410 * HWMOD_NO_IDLEST: this module does not have idle status - this is the case
411 * only for few initiator modules on OMAP2 & 3.
412 * HWMOD_CONTROL_OPT_CLKS_IN_RESET: Enable all optional clocks during reset.
413 * This is needed for devices like DSS that require optional clocks enabled
414 * in order to complete the reset. Optional clocks will be disabled
415 * again after the reset.
416 * HWMOD_16BIT_REG: Module has 16bit registers
417 * HWMOD_EXT_OPT_MAIN_CLK: The only main functional clock source for
418 * this IP block comes from an off-chip source and is not always
419 * enabled. This prevents the hwmod code from being able to
420 * enable and reset the IP block early. XXX Eventually it should
421 * be possible to query the clock framework for this information.
422 * HWMOD_BLOCK_WFI: Some OMAP peripherals apparently don't work
423 * correctly if the MPU is allowed to go idle while the
424 * peripherals are active. This is apparently true for the I2C on
425 * OMAP2420, and also the EMAC on AM3517/3505. It's unlikely that
426 * this is really true -- we're probably not configuring something
427 * correctly, or this is being abused to deal with some PM latency
428 * issues -- but we're currently suffering from a shortage of
429 * folks who are able to track these issues down properly.
430 * HWMOD_FORCE_MSTANDBY: Always keep MIDLEMODE bits cleared so that device
431 * is kept in force-standby mode. Failing to do so causes PM problems
432 * with musb on OMAP3630 at least. Note that musb has a dedicated register
433 * to control MSTANDBY signal when MIDLEMODE is set to force-standby.
434 * HWMOD_SWSUP_SIDLE_ACT: omap_hwmod code should manually bring the module
435 * out of idle, but rely on smart-idle to the put it back in idle,
436 * so the wakeups are still functional (Only known case for now is UART)
437 * HWMOD_RECONFIG_IO_CHAIN: omap_hwmod code needs to reconfigure wake-up
438 * events by calling _reconfigure_io_chain() when a device is enabled
439 * or idled.
440 * HWMOD_OPT_CLKS_NEEDED: The optional clocks are needed for the module to
441 * operate and they need to be handled at the same time as the main_clk.
442 * HWMOD_NO_IDLE: Do not idle the hwmod at all. Useful to handle certain
443 * IPs like CPSW on DRA7, where clocks to this module cannot be disabled.
444 * HWMOD_CLKDM_NOAUTO: Allows the hwmod's clockdomain to be prevented from
445 * entering HW_AUTO while hwmod is active. This is needed to workaround
446 * some modules which don't function correctly with HW_AUTO. For example,
447 * DCAN on DRA7x SoC needs this to workaround errata i893.
448 */
449#define HWMOD_SWSUP_SIDLE (1 << 0)
450#define HWMOD_SWSUP_MSTANDBY (1 << 1)
451#define HWMOD_INIT_NO_RESET (1 << 2)
452#define HWMOD_INIT_NO_IDLE (1 << 3)
453#define HWMOD_NO_OCP_AUTOIDLE (1 << 4)
454#define HWMOD_SET_DEFAULT_CLOCKACT (1 << 5)
455#define HWMOD_NO_IDLEST (1 << 6)
456#define HWMOD_CONTROL_OPT_CLKS_IN_RESET (1 << 7)
457#define HWMOD_16BIT_REG (1 << 8)
458#define HWMOD_EXT_OPT_MAIN_CLK (1 << 9)
459#define HWMOD_BLOCK_WFI (1 << 10)
460#define HWMOD_FORCE_MSTANDBY (1 << 11)
461#define HWMOD_SWSUP_SIDLE_ACT (1 << 12)
462#define HWMOD_RECONFIG_IO_CHAIN (1 << 13)
463#define HWMOD_OPT_CLKS_NEEDED (1 << 14)
464#define HWMOD_NO_IDLE (1 << 15)
465#define HWMOD_CLKDM_NOAUTO (1 << 16)
466
467/*
468 * omap_hwmod._int_flags definitions
469 * These are for internal use only and are managed by the omap_hwmod code.
470 *
471 * _HWMOD_NO_MPU_PORT: no path exists for the MPU to write to this module
472 * _HWMOD_SYSCONFIG_LOADED: set when the OCP_SYSCONFIG value has been cached
473 * _HWMOD_SKIP_ENABLE: set if hwmod enabled during init (HWMOD_INIT_NO_IDLE) -
474 * causes the first call to _enable() to only update the pinmux
475 */
476#define _HWMOD_NO_MPU_PORT (1 << 0)
477#define _HWMOD_SYSCONFIG_LOADED (1 << 1)
478#define _HWMOD_SKIP_ENABLE (1 << 2)
479
480/*
481 * omap_hwmod._state definitions
482 *
483 * INITIALIZED: reset (optionally), initialized, enabled, disabled
484 * (optionally)
485 *
486 *
487 */
488#define _HWMOD_STATE_UNKNOWN 0
489#define _HWMOD_STATE_REGISTERED 1
490#define _HWMOD_STATE_CLKS_INITED 2
491#define _HWMOD_STATE_INITIALIZED 3
492#define _HWMOD_STATE_ENABLED 4
493#define _HWMOD_STATE_IDLE 5
494#define _HWMOD_STATE_DISABLED 6
495
496/**
497 * struct omap_hwmod_class - the type of an IP block
498 * @name: name of the hwmod_class
499 * @sysc: device SYSCONFIG/SYSSTATUS register data
500 * @rev: revision of the IP class
501 * @pre_shutdown: ptr to fn to be executed immediately prior to device shutdown
502 * @reset: ptr to fn to be executed in place of the standard hwmod reset fn
503 * @enable_preprogram: ptr to fn to be executed during device enable
504 * @lock: ptr to fn to be executed to lock IP registers
505 * @unlock: ptr to fn to be executed to unlock IP registers
506 *
507 * Represent the class of a OMAP hardware "modules" (e.g. timer,
508 * smartreflex, gpio, uart...)
509 *
510 * @pre_shutdown is a function that will be run immediately before
511 * hwmod clocks are disabled, etc. It is intended for use for hwmods
512 * like the MPU watchdog, which cannot be disabled with the standard
513 * omap_hwmod_shutdown(). The function should return 0 upon success,
514 * or some negative error upon failure. Returning an error will cause
515 * omap_hwmod_shutdown() to abort the device shutdown and return an
516 * error.
517 *
518 * If @reset is defined, then the function it points to will be
519 * executed in place of the standard hwmod _reset() code in
520 * mach-omap2/omap_hwmod.c. This is needed for IP blocks which have
521 * unusual reset sequences - usually processor IP blocks like the IVA.
522 */
523struct omap_hwmod_class {
524 const char *name;
525 struct omap_hwmod_class_sysconfig *sysc;
526 u32 rev;
527 int (*pre_shutdown)(struct omap_hwmod *oh);
528 int (*reset)(struct omap_hwmod *oh);
529 int (*enable_preprogram)(struct omap_hwmod *oh);
530 void (*lock)(struct omap_hwmod *oh);
531 void (*unlock)(struct omap_hwmod *oh);
532};
533
534/**
535 * struct omap_hwmod - integration data for OMAP hardware "modules" (IP blocks)
536 * @name: name of the hwmod
537 * @class: struct omap_hwmod_class * to the class of this hwmod
538 * @od: struct omap_device currently associated with this hwmod (internal use)
539 * @prcm: PRCM data pertaining to this hwmod
540 * @main_clk: main clock: OMAP clock name
541 * @_clk: pointer to the main struct clk (filled in at runtime)
542 * @opt_clks: other device clocks that drivers can request (0..*)
543 * @voltdm: pointer to voltage domain (filled in at runtime)
544 * @dev_attr: arbitrary device attributes that can be passed to the driver
545 * @_sysc_cache: internal-use hwmod flags
546 * @mpu_rt_idx: index of device address space for register target (for DT boot)
547 * @_mpu_rt_va: cached register target start address (internal use)
548 * @_mpu_port: cached MPU register target slave (internal use)
549 * @opt_clks_cnt: number of @opt_clks
550 * @master_cnt: number of @master entries
551 * @slaves_cnt: number of @slave entries
552 * @response_lat: device OCP response latency (in interface clock cycles)
553 * @_int_flags: internal-use hwmod flags
554 * @_state: internal-use hwmod state
555 * @_postsetup_state: internal-use state to leave the hwmod in after _setup()
556 * @flags: hwmod flags (documented below)
557 * @_lock: spinlock serializing operations on this hwmod
558 * @node: list node for hwmod list (internal use)
559 * @parent_hwmod: (temporary) a pointer to the hierarchical parent of this hwmod
560 *
561 * @main_clk refers to this module's "main clock," which for our
562 * purposes is defined as "the functional clock needed for register
563 * accesses to complete." Modules may not have a main clock if the
564 * interface clock also serves as a main clock.
565 *
566 * Parameter names beginning with an underscore are managed internally by
567 * the omap_hwmod code and should not be set during initialization.
568 *
569 * @masters and @slaves are now deprecated.
570 *
571 * @parent_hwmod is temporary; there should be no need for it, as this
572 * information should already be expressed in the OCP interface
573 * structures. @parent_hwmod is present as a workaround until we improve
574 * handling for hwmods with multiple parents (e.g., OMAP4+ DSS with
575 * multiple register targets across different interconnects).
576 */
577struct omap_hwmod {
578 const char *name;
579 struct omap_hwmod_class *class;
580 struct omap_device *od;
581 struct omap_hwmod_rst_info *rst_lines;
582 union {
583 struct omap_hwmod_omap2_prcm omap2;
584 struct omap_hwmod_omap4_prcm omap4;
585 } prcm;
586 const char *main_clk;
587 struct clk *_clk;
588 struct omap_hwmod_opt_clk *opt_clks;
589 const char *clkdm_name;
590 struct clockdomain *clkdm;
591 struct list_head slave_ports; /* connect to *_TA */
592 void *dev_attr;
593 u32 _sysc_cache;
594 void __iomem *_mpu_rt_va;
595 spinlock_t _lock;
596 struct lock_class_key hwmod_key; /* unique lock class */
597 struct list_head node;
598 struct omap_hwmod_ocp_if *_mpu_port;
599 u32 flags;
600 u8 mpu_rt_idx;
601 u8 response_lat;
602 u8 rst_lines_cnt;
603 u8 opt_clks_cnt;
604 u8 slaves_cnt;
605 u8 hwmods_cnt;
606 u8 _int_flags;
607 u8 _state;
608 u8 _postsetup_state;
609 struct omap_hwmod *parent_hwmod;
610};
611
612struct device_node;
613
614struct omap_hwmod *omap_hwmod_lookup(const char *name);
615int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data),
616 void *data);
617
618int __init omap_hwmod_setup_one(const char *name);
619int omap_hwmod_parse_module_range(struct omap_hwmod *oh,
620 struct device_node *np,
621 struct resource *res);
622
623struct ti_sysc_module_data;
624struct ti_sysc_cookie;
625
626int omap_hwmod_init_module(struct device *dev,
627 const struct ti_sysc_module_data *data,
628 struct ti_sysc_cookie *cookie);
629
630int omap_hwmod_enable(struct omap_hwmod *oh);
631int omap_hwmod_idle(struct omap_hwmod *oh);
632int omap_hwmod_shutdown(struct omap_hwmod *oh);
633
634int omap_hwmod_assert_hardreset(struct omap_hwmod *oh, const char *name);
635int omap_hwmod_deassert_hardreset(struct omap_hwmod *oh, const char *name);
636
637void omap_hwmod_write(u32 v, struct omap_hwmod *oh, u16 reg_offs);
638u32 omap_hwmod_read(struct omap_hwmod *oh, u16 reg_offs);
639int omap_hwmod_softreset(struct omap_hwmod *oh);
640
641int omap_hwmod_count_resources(struct omap_hwmod *oh, unsigned long flags);
642int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res);
643int omap_hwmod_get_resource_byname(struct omap_hwmod *oh, unsigned int type,
644 const char *name, struct resource *res);
645
646struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh);
647void __iomem *omap_hwmod_get_mpu_rt_va(struct omap_hwmod *oh);
648
649int omap_hwmod_enable_wakeup(struct omap_hwmod *oh);
650int omap_hwmod_disable_wakeup(struct omap_hwmod *oh);
651
652int omap_hwmod_for_each_by_class(const char *classname,
653 int (*fn)(struct omap_hwmod *oh,
654 void *user),
655 void *user);
656
657int omap_hwmod_set_postsetup_state(struct omap_hwmod *oh, u8 state);
658int omap_hwmod_get_context_loss_count(struct omap_hwmod *oh);
659
660extern void __init omap_hwmod_init(void);
661
662const char *omap_hwmod_get_main_clk(struct omap_hwmod *oh);
663
664/*
665 *
666 */
667
668extern int omap_hwmod_aess_preprogram(struct omap_hwmod *oh);
669void omap_hwmod_rtc_unlock(struct omap_hwmod *oh);
670void omap_hwmod_rtc_lock(struct omap_hwmod *oh);
671
672/*
673 * Chip variant-specific hwmod init routines - XXX should be converted
674 * to use initcalls once the initial boot ordering is straightened out
675 */
676extern int omap2420_hwmod_init(void);
677extern int omap2430_hwmod_init(void);
678extern int omap3xxx_hwmod_init(void);
679extern int omap44xx_hwmod_init(void);
680extern int omap54xx_hwmod_init(void);
681extern int am33xx_hwmod_init(void);
682extern int dm814x_hwmod_init(void);
683extern int dm816x_hwmod_init(void);
684extern int dra7xx_hwmod_init(void);
685int am43xx_hwmod_init(void);
686
687extern int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois);
688
689#endif